Influence of uniaxial deformation on structure of carbon-coated polyurethane surface

6th International Conference on Nanomaterials and Materials Engineering

Morozov, I.A.^1,2 ; Mamaev, A.S.^3 ; Beliaev, A.Y.^1 ; Osorgina, I.V.^2

Institute of Continuous Media Mechanics UB RAS, Academika Koroleva st. 1, Perm

614013, Russia^1

Perm State University, Bukireva st. 15, Perm

614990, Russia^2

Institute of Electrophysics UB RAS, Amundsen st. 106, Ekaterinburg

620016, Russia^3

关键词: Biomedical devices;    Deposited layer;    Mechanical deformation;    Mechanical loads;    Plasma treatment;    Strain induced;    Uniaxial cyclic deformation;    Uniaxial deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/380/1/012007/pdf
DOI  :  10.1088/1757-899X/380/1/012007

来源: IOP

【 摘 要 】

Plasma treatment of polymers is the promising technique for improving the quality of biomedical devices, in particular deformable implants. The influence of mechanical deformation on such coating has not been sufficiently studied. The effect of the uniaxial cyclic deformation on the surface structure of carbon nanolayer deposited (by the magnetron sputtering) on soft elastic polyurethane is investigated. The obtained coating is wrinkled. The mechanical load changes the structure of the surface (wavelength, amplitude and fractal dimension of the wrinkles, surface roughness); the cracks appear on the deposited layer. As the strain increases, the number of cracks rises and the strain-induced folds appear on the coating.